/* File: file_nes.c Copyright (C) 2013 James Holodnak <jamesholodnak@gmail.com> This software is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */#ifdef HAVE_CONFIG_H#include <config.h>#endif#ifdef HAVE_STRING_H#include <string.h>#endif#include <stdio.h>#include"types.h"#include"filegen.h"#include"common.h"static voidregister_header_check_nes(file_stat_t *file_stat);const file_hint_t file_hint_nes= {.extension="nes",.description="iNES/iNES 2.0 ROM image",.max_filesize=PHOTOREC_MAX_FILE_SIZE,.recover=1,.enable_by_default=0,.register_header_check=&register_header_check_nes
};struct nes_header
{char ident[4];uint8_t prgsize;uint8_t chrsize;}__attribute__((gcc_struct, __packed__));static intheader_check_nes(const unsigned char*buffer,const unsigned int buffer_size,const unsigned int safe_header_only,const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new){const struct nes_header *bm=(const struct nes_header *)buffer;const uint64_t size=16+bm->prgsize*0x4000+bm->chrsize*0x2000;reset_file_recovery(file_recovery_new);
file_recovery_new->extension=file_hint_nes.extension;
file_recovery_new->min_filesize=16;
file_recovery_new->calculated_file_size=(uint64_t)size;
file_recovery_new->data_check=&data_check_size;
file_recovery_new->file_check=&file_check_size;return1;}static voidregister_header_check_nes(file_stat_t *file_stat){static const unsigned char nes_header[4]= {'N','E','S',0x1A};register_header_check(0, nes_header,sizeof(nes_header), &header_check_nes, file_stat);}